采用CO、H2对高铝铁矿焙烧球团在高温同步热分析仪(NETZSCH STA 409C/CD)中进行非等温还原.结果表明:焙烧球团经CO还原后,随着设定温度由1 273K升高到1 473K,最终还原度由32.21%仅增加到46.78%;而经H2还原后,随着设定温度由1 273K升高到1 573K,最终还原度由81.93%增加到100%.在纯氢气还原条件下,高铝铁矿焙烧球团中的铁氧化物是可以被彻底还原的.
Non-isothermal reduction for roasted pellets of high alumina iron ore through a high temperature synchronized thermal analyzer (NETZSCH STA 409C/CD) was conducted with CO and H2.The results showed that when the roasted pellet is reduced by CO, with the temperature increasing from 1 273K to 1 473K, the final reduction degree rises from 32.21% to 46.78%.While it is reduced by hydrogen, with the temperature increasing from 1 273K to 1 573K, the final reduction degree rises from 81.93% to 100%.It suggests that the iron ore can completely be reduced to metallic iron by hydrogen.
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